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Finding the Fourth Proportional to 704,433.38, 972,118.06 and 402,633.86

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Solution

The fourth proportional to 704,433.38, 972,118.06 and 402,633.86 is: 555,634.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,433.38 : 972,118.06 = 402,633.86 : x
  2. Step 2: Convert to fraction form
    704,433.38/972,118.06 = 402,633.86/x
  3. Step 3: Cross multiply
    704,433.38x = 972,118.06 × 402,633.86
  4. Step 4: Simplify right side
    704,433.38x = 391,407,641,006.34
  5. Step 5: Solve for x
    x = 391,407,641,006.34/704,433.38
  6. Step 6: Final answer
    x = 555,634.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.